210 XX. DiPTEROCARPACEiE. [Dryobalunops. 



Sepals united at base only. In fruit developed into 

 erect wings longer than fruit. 

 Wings 3 long, 2 shorter. 



Flowers large ; petals broad, thin ... 4. Pentacme 



Flowers small ; petals narrow. 



Fruit small, pericarp coriaceous; wings much 



longer 5- Shorea 



Fruit large, pericarp woody ; wings hardly 



longer .....•• 6. Pachychlamys 



All 5 wings equally long 7- Parashorea 



Wings 2 large, 3 small ..... 8. Hopea 

 Sepals free to base. 



Wings 2 long, 3 shorter ovate. 



Leaves stiff coriaceous 9- Cotylelobium 



Leaves thin coriaceous . . . . .10. Synaptea 



Sepals in fruit all equal, often shorter than fruit. 



Stamens 10 to 15; sepals in fruit oblong or ovate 11. Vatica 

 Stamens 30 to 36 ; sepals orbicular . . .12. Isoptera 



Sepals not winged in fruit, reduced to a small cup. 



Sepals in fruit coriaceous, separate . . . 13. Balanocarpus 



Sepals in fruit woody-corky, forming a more or less 



lobed cup, or short corky processes . .14. Pachynocarpus 



1. DRYOBALANOPS, Gaertn. 

 Very large trees containing camphor. Leaves coriaceous. 

 Flowers in panicles or racemes terminal and in the upper axils. 

 Calyx-tube short, free with oblong lobes. Petals lanceolate. 

 Stamens 35 to 45 ; filaments short ; anthers bifid at the tip, con- 

 nective apiculate. Ovary 3-celled; cells 2-ovuled; style entire. 

 Fruit conic elongate in a cup formed by the connate bases of the 

 sepals; wings 5, elongate equal. Species 7, Malay Peninsula and 

 islands. 



Leaves short, ovate cuspidate, base round . . (i) D. aromatica. 



Leaves oblong lanceolate acuminate, base broad . (2) D. Beccaxiana 



(i) D. aromatica Gaertn. Fruct. iii. 49, /. 186. D. Camphora 

 Colebr. Asiat. Research xii. 535; Davies, Agric. Bull. Straits ix. 

 297; Ridl. I.e. 299. (Fig. 23, a, b, c, p. 213.) 



Tree 150 ft. tall, buttressed, girth 35 ft. Leaves stiff coriaceous 

 ovate abruptly acuminate, base round, 3 in. long, 1*25 in. wide, 

 deep green polished ; nerves very fine close parallel and numerous ; 

 petioles -5 in. long. Panicles terminal 2 in. long. Flowers white, 

 fragrant. Sepals lanceolate acute, "25 in. long, scurfy on the back. 

 Petals as long, thin, lanceolate, blunt. Fruit i in. long, the wings 

 oblong, 3 in. long, -5 in. wide, finely ribbed, cup sub-globo.se, '5 in. 

 long and wide. Hab. Forests, usually gregarious, the whole forest 

 consisting of this tree only; lowlands on low hills." Johor, Endau 

 River ; Penyabong (Foxworthy). Pahang, Rumpin River ; Kwantan. 

 Selangor, Ranching. Negri Sembilan, .Seremban (Rinsey). Perak, 

 Kanding (Burkill). Distrib. Sumatra, Borneo. Native name : 

 Kapur Barus. Use : This tree produces camphor oil and camphor, 

 which is collected by the Malays for sale, chiefly to the Chinese, 



